Changed
- The optional second positional parameter of `noun_plural()` and
`noun_singular()` can now be a list, dictionary, set, or tuple, in
which case the length is used.
- Elements with `aria-hidden="true"` or CSS class `sr-exclude` will
be ignored by the VoiceRSS screen reader.
- `force_ask()`, `force_gather()`, `undefine()`, `forget_result_of()`,
and `reconsider()` now accept generators as positional parameters.
- When given `Person` objects, `send_email()` will include names in
To, Cc, and Bcc if the names are defined.
Fixed
- A `fields` question with no variable-setting fields or a `continue
button field` did not get marked as answered.